Mark Harmon and Michael Weatherly Reunite on NCIS: Origins
Weatherly said the scene with Harmon was more moving than he expected, in the episode Return of the Mack.
Mark Harmon and Michael Weatherly appeared together on screen as Leroy Jethro Gibbs and Tony DiNozzo in the NCIS: Origins episode titled Return of the Mack, which aired earlier in the week of October 23, 2026, according to screenrant.com.
In the episode, Gibbs seeks DiNozzo's help in tracking down the people who targeted him. Weatherly described the scene with Harmon as more moving than he expected.
Weatherly also said that returning as Director DiNozzo involved shifting power dynamics and father-figure themes. CBS posted an official NCIS: Origins video in which the actor discussed the reunion.
Long history between the characters
Both characters debuted in the JAG two-parter Ice Queen and Meltdown, which served as NCIS's backdoor pilot. Weatherly left NCIS in the season 13 finale, ten years before October 2026, and later starred in the CBS series Bull for six seasons. Harmon departed NCIS in the season 19 episode Great Wide Open.
Weatherly made a surprise cameo in NCIS season 21's tribute episode to the late David McCallum, and teamed up with Cote de Pablo for the Paramount+ spinoff NCIS: Tony & Ziva. NCIS: Origins released on October 14, 2024, on CBS, and its season 3 premiere saw Gibbs shot by an unknown assailant. In NCIS season 24, Tony succeeds the late Leon Vance as director.
Quick answers
Which NCIS: Origins episode features Mark Harmon and Michael Weatherly together?
The episode titled Return of the Mack, which aired earlier in the week of October 23, 2026.
What happens in the reunion scene?
Gibbs seeks Tony DiNozzo's help in tracking down the people who targeted him.